File Sorting Application

We are the Project Management Consultants, and lots of information in files are transferred from one end to other via different modes of communication i.e. Drive, Wetransfer, Whatsapp, Emails, etc. but are unorganized and not in central location. We are in requirement of developing a Web Based Server where files can be stored by individuals and similar can be operated by using Mobile application. We can limit the user by restrictions of different type.